2820861968 has 10 divisors (see below), whose sum is σ = 5465420094. Its totient is φ = 1410430976.

The previous prime is 2820861943. The next prime is 2820861973. The reversal of 2820861968 is 8691680282.

It can be written as a sum of positive squares in only one way, i.e., 1917739264 + 903122704 = 43792^2 + 30052^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 88151921 + ... + 88151952.

Almost surely, 2^2820861968 is an apocalyptic number.

It is an amenable number.

2820861968 is a deficient number, since it is larger than the sum of its proper divisors (2644558126).

2820861968 is a wasteful number, since it uses less digits than its factorization.

2820861968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176303881 (or 176303875 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 2820861968 is about 53111.7874675669. The cubic root of 2820861968 is about 1412.9515771073.

The spelling of 2820861968 in words is "two billion, eight hundred twenty million, eight hundred sixty-one thousand, nine hundred sixty-eight".